Lion sleep mode question/early 2008 MacBook

I have a quick question about sleep mode in Lion. I had installed Lion on my early 2008 MacBook when Lion first came out. I ended up uninstalling it and going back to Snow Leopard though because my computer kept going to sleep even though I had set it to never go to sleep (I need to be able to use LogMeIn, TeamViewer, etc. to access my computer when I'm away from home).

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